86 fox body with a 408 and pro comps. 12:1 with a solid roller nos cam. 650 lift. 6.90@115 on motor(1/8) and 5.80@130 on the bottle!!! We had good luck and no failures with them. Actually that car went undefeated in the 5.95 class in our local kots class. Heads have "freeze "plugs in them...looks srangely identical to a set of canfields....hmmmm....makes you wonder :wink:

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